Finding the Fourth Proportional to 31,729.94, 43,792.72 and 18,298.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,729.94 : 43,792.72 = 18,298.78 : x
2. Step 2: Convert to fraction form
   31,729.94/43,792.72 = 18,298.78/x
3. Step 3: Cross multiply
   31,729.94x = 43,792.72 × 18,298.78
4. Step 4: Simplify right side
   31,729.94x = 801,353,348.88
5. Step 5: Solve for x
   x = 801,353,348.88/31,729.94
6. Step 6: Final answer
   x = 25,255.43